Time Units
How many years are in two decades?
20
In what year did the 21st century begin?
2001
How many centuries are in ten millennia?
1000
What does BCE stand for?
Before common era
Which event happened first: birth of Confucius (551 BCE) or building of Stonehenge (2600 BCE)?
Stonehenge
Which is longer: a millennium or a century, and by how many years?
Millennium by 900 years
Which century includes the year 1492?
15th
Calculate the duration of the Middle Ages (476 CE to 1492 CE).
1,016 years
Which year comes immediately after 1 BCE?
Put these in chronological order: Fall of Roman Empire (476 CE), Magna Carta (1215 CE), Columbus discovers America (1492 CE).
A: Roman Empire → Magna Carta → Columbus
How many weeks in a year?
52
What years are included in the 7th century CE?
A: 601–700
How many years passed between the invention of the wheel (3500 BCE) and the moon landing (1969 CE)?
5,469 years
Which numbers increase as you move forward in time: BCE or CE?
CE
Which event is most recent: Declaration of Independence (1776 CE) or Moon landing (1969 CE)?
Moonlanding
If a millennium is 1,000 years, how many decades does it contain?
100
Convert the year 300 BCE into its century.
4th century BCE
Calculate the time span between the birth of Julius Caesar (100 BCE) and the end of the American Civil War (1865 CE).
1965
Explain the relationship between AD and CE.
Both refer to years after year 1; CE is modern term for AD
Which events occurred before Confucius (551 BCE): Great Pyramid (2560 BCE), Stonehenge (2600 BCE), Wheel (3500 BCE)?
A: All three
Arrange these from shortest to longest: decade, century, millennium, week, year.
Week, Year, Decade, Century, Millennium
The 30th century will include which years?
2901–3000
The Great Pyramid of Giza (2560 BCE) to the fall of the Roman Empire (476 CE): How many years apart?
3036
True or False: The year 500 BCE is further in the past than 500 CE.
True
Arrange these from earliest to latest: Great Pyramid (2560 BCE), Roman Empire (476 CE), Renaissance (14th century CE), Civil War (1865 CE).
A: Pyramid → Roman Empire → Renaissance → Civil War